PHP 如何转换关联数组?

PHP How to transform an associative array?

我有一个数组,它来自 POST 数据

Array
(
    [date_from] => Array
        (
            [0] => 01/10/2015
            ...
        )

    [date_to] => Array
        (
            [0] => 01/11/2015
            ...
        )

    [price_eur] => Array
        (
            [0] => 8
            ...
        )

    [price_usd] => Array
        (
            [0] => 9
            ...
        )

)

我想将其转换为:

Array
(
    [0] => Array
        (
            ['date_from']   => 01/10/2015
            ['date_to']     => 01/11/2015
            ['price_eur']   => 8
            ['price_usd']   => 9
        )

    ...
)

如何转换这个php关联数组?

只是写意而已。让我知道进展如何

foreach ($original as $key => $arr){
    foreach ($arr as $x => $y){
        $new[$x][$key] = $y
    }
}